Where does “Pa-ki-xtan” come from?

Pa-ki-xtan (Vietnamese) comes from English Pakistan, from Urdu پاکستان, from Classical Persian پَاک.

Pa-ki-xtan (Vietnamese): Pakistani

Definitions

Step	Language	Word	Meaning
1	English	Pakistan	—
2	Urdu	پاکستان	Land of the Pure
3	Classical Persian	پَاک	—

Pa-ki-xtan — Etymology, Origin & Word History | Etymology Explorer